/**
 * #      1038
 * 名称   把二叉搜索树转换为累加树
 * 链接   https://leetcode-cn.com/problems/binary-search-tree-to-greater-sum-tree
 * 题解   [247](https://leetcode-cn.com/problems/binary-search-tree-to-greater-sum-tree/solution)
 * 通过率 78.7%
 * 难道   中等
 */

